I use Viscosity on el Capitan and until yesterday it worked perfectly. I don't know what I did but I can't connect anymore to my providers, even with an other app. This is the following log that I have :

The error likely means that the permissions on your computer’s global temporary directory are incorrect. Please try running the following commands from the Terminal (/Applications/Utilities/Terminal) to set the directory to the correct permissions and see if it resolves the issue: